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74LVC2952ADB Datasheet(PDF) 2 Page - NXP Semiconductors |
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74LVC2952ADB Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 11 page Philips Semiconductors Product specification 74LVC2952A Octal registered tranceiver with 5-volt tolerant inputs/ouputs (3-State) 2 1998 Jul 29 853-1993 19803 FEATURES • 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic • Wide supply voltage range of 1.2 V to 3.6 V • In accordance with the JEDEC standard no. 8-1 A • Inputs accept voltages up to 5.5 V • CMOS low power consumption • Flow-through pin-out architecture • 3-State outputs • Direct interface with TTL levels • Integrated 30W damping resistor DESCRIPTION The 74LVC2952A is a low-power, low-voltage, Si-gate CMOS device and superior to most advanced CMOS compatible TTL families. The 74LVC2952A is an octal non-inverting registered transceiver. Two 8-bit back to back registers store data flowing in both directions between two bidirectional busses. Data applied to the inputs is entered and stored on the rising edge of the clock (CPnn) provided that the clock enable CEnn) is LOW. The data is then present at the 3-State output buffers, but is only accessible when the output enable input (OEnn) is LOW. Data flow from A inputs to B outputs is the same as for B inputs to A outputs. The 74LVC2952A is identical to the 74LVC2953A but has non-inverting outputs. QUICK REFERENCE DATA GND = 0 V; Tamb = 25°C; tr =tf ≤ 2.5 ns SYMBOL PARAMETER CONDITIONS TYPICAL UNIT tPHL/tPLH Propagation delay CPnn to An, Bn CL = 50 pF; VCC = 3.3 V 4.3 ns fmax Maximum clock frequency 150 MHz CI Input capacitance 5 pF CI/O Input/output capacitance 10 pF CPD Power dissipation capacitance per buffer VCC = 3.3V1 31 pF NOTE: 1CPD is used to determine the dynamic power dissipation (PD in µW) PD = CPD × VCC2 × fi ) (CL × VCC2 × fo) where: fi = input frequency in MHz; CL = output load capacity in pF; fo = output frequency in MHz; VCC = supply voltage in V; (CL × VCC2 × fo) = sum of the outputs. ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 24-Pin Plastic SO –40 °C to +125°C 74LVC2952A D 74LVC2952A D SOT137-1 24-Pin Plastic SSOP Type II –40 °C to +125°C 74LVC2952A DB 74LVC2952A DB SOT340-1 24-Pin Plastic TSSOP Type I –40 °C to +125°C 74LVC2952A PW 74LVC2952APW DH SOT355-1 PIN CONFIGURATION SV01716 B7 B6 B5 B4 B3 B2 B1 B0 OEAB CPAB CEAB CEBA CPBA OEBA 1 2 3 4 5 6 7 8 9 10 11 12 GND VCC A7 A6 A5 A4 A3 A2 A1 A0 24 23 22 21 20 19 18 17 16 15 14 13 PIN DESCRIPTION PIN NUMBER SYMBOL FUNCTION 8, 7, 6, 5, 4, 3, 2, 1, B0 to B7 B data inputs/outputs 12 GND Ground (0 V) 9, 15 OEAB,OEBA Output enable inputs (active LOW) 10, 14 CPAB, CPBA Clock inputs 11, 13, CEAB, CEBA Clock enable inputs 16, 17, 18, 19, 20, 21, 22, 23 A0 to A7 A data inputs/outputs 24 VCC Positive supply voltage |
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